Members of the family Tettigoniidae are commonly known as bush crickets or katydids, and are closely related to the crickets, which are also members of Ensifera, but are not included with the grasshoppers.

During reproduction, the male grasshopper introduces sperm into the vagina through its aedeagus (reproductive organ), and inserts its spermatophore, a package containing the sperm, into the female's ovipositor.

Members of the suborder Caelifera, including therein the family Acrididae, are as a group sometimes called short-horned grasshoppers, in which case members of the suborder Ensifera are called long-horned grasshoppers (Grzimek et al.